(181010) -- HONG KONG, Oct. 10, 2018 -- Dayana Yastremska of Ukraine competes during the singles second round match against Zheng Saisai of China at 2018 Hong Kong Tennis Open in Hong Kong, China, Oct. 10, 2018. Dayana Yastremska won 2-0. ) (SP)CHINA-HONG KONG-TENNIS-HONG KONG OPEN(CN) LoxPingxFai PUBLICATIONxNOTxINxCHN